1222981393 has 2 divisors, whose sum is σ = 1222981394. Its totient is φ = 1222981392.

The previous prime is 1222981381. The next prime is 1222981423. The reversal of 1222981393 is 3931892221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1109089809 + 113891584 = 33303^2 + 10672^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222981393 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222981693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611490696 + 611490697.

It is an arithmetic number, because the mean of its divisors is an integer number (611490697).

Almost surely, 2^1222981393 is an apocalyptic number.

It is an amenable number.

1222981393 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222981393 is an equidigital number, since it uses as much as digits as its factorization.

1222981393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 40.

The square root of 1222981393 is about 34971.1508675365. The cubic root of 1222981393 is about 1069.3994338471.

The spelling of 1222981393 in words is "one billion, two hundred twenty-two million, nine hundred eighty-one thousand, three hundred ninety-three".